package servletUtenteNonReg;

import eccezioni.NoAmiciException;
import gestioneContesto.GestoreContesto;

import java.io.IOException;
import java.util.ArrayList;

import javax.naming.NamingException;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import logicaUtenteNonReg.GestoreInformazioniRemote;

/**
 * Servlet implementation class AmiciNonRegServlet
 */
public class AmiciNonRegServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;

	private RequestDispatcher dispatcher;
	private GestoreContesto contesto;

	/**
	 * @see HttpServlet#HttpServlet()
	 */
	public AmiciNonRegServlet() {

		super();
		contesto = new GestoreContesto();

	}

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

		try {
			eseguiRichiesta(request, response);
		} catch (NamingException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}

	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

		try {
			eseguiRichiesta(request, response);
		} catch (NamingException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}

	}

	private void eseguiRichiesta(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException, NamingException {

		GestoreInformazioniRemote gestore = contesto.getGestore(GestoreInformazioniRemote.class, "GestoreInformazioniRemote");

		String username = request.getParameter("username");

		try {
			
			ArrayList<String> amici = gestore.amici(username);
			
			for(int i = 0; i < amici.size(); i++) {
				
				request.setAttribute("el" + i, amici.get(i));
				
			}
			
			request.setAttribute("size", amici.size());
			dispatcher = request.getRequestDispatcher("ListaAmiciNonReg.jsp");
			dispatcher.forward(request, response);
			
		}
		catch(NoAmiciException e) {
			
			request.setAttribute("size", 0);
			request.setAttribute("err", e.getMessaggio());
			dispatcher = request.getRequestDispatcher("ListaAmiciNonReg.jsp");
			dispatcher.forward(request, response);
			
		}
		
	}

}
